Park assist, front and rear, ultrasonic

Years 2016–19, 2022–23 Models 4 Factory citations 11

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Also described as Front and rear park assistPark assist, front and rear

Also documented for Cadillac Chevrolet GMC

Documented applications

Enclave — C1XX (2018–2024)

2018, 2022–2023 Factory-verified

2018: Premium, Avenir: S; 2022–2023: all trims: S, in PDD, replacing UD7 on Essence; 2022: certain vehicles built from December 20, 2021 are forced to 00Z, which removes it; 2023: forced to 00Z from the start of production

GM factory document — 2018 buick enclave fleet order guide wayback, p.1.
GM factory document — 2022 buick enclave order guide copy nhtsa docket, p.8, p.29.
GM factory document — 2023 buick enclave order guide copy autoevolution wayback, p.7, p.26.

Encore — Gamma II (2013–2022)

2018–2019 Factory-verified

2018: Premium: included; 2019: Essence, with PCL; the 2014 guide lists it as not available on any trim

GM factory document — 2018 buick encore order guide copy gm authority, p.20.
GM factory document — 2019 buick encore order guide copy gm authority, p.18.

Envision — D2XX, imported from China (2016–2020)

2016–2019 Factory-verified

1SN: S

GM factory document — 2016 buick envision order guide copy gm authority, p.4, p.14.
GM factory document — 2017 buick envision order guide copy gm authority, p.5, p.19.
GM factory document — 2018 buick envision order guide copy gm authority, p.5, p.17.
GM factory document — 2019 buick envision order guide copy gm authority, p.6, p.21.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

only in: Sportback; 2019: GS: S (2019 Sportback order guide)

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.

This page aggregates every documented appearance of UD5 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.